Make sure this part fits

GM 20852777
Brake Booster

2009-2010 GM

Customer Questions & Expert Answers (3)
GM 20852777 Brake Booster
GM 20852777 Brake Booster
  • Part Description
    Booster, Hydraulic Power Brake Booster
  • Replaces
    25991525
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number20852777
    Part DescriptionBooster, Hydraulic Power Brake Booster
    Other NamesBooster
    Item Dimensions9.7 x 6.7 x 4.9 inches
    Item Weight6.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces25991525
    ManufacturerGeneral Motors
    SKU20852777
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Trim Engine
    2009-2010 Chevrolet CobaltBase, LS, LT4 Cyl 2.2 L GAS
    2009 Pontiac G5Base, GT4 Cyl 2.2 L GAS
  • Customer Questions & Expert Answers

    Q:
    Can you help me check if this 20852777 is the right part for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 20852777 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the power vacuum brake booster on Chevrolet Cobalt? Posted by Customer
    A:
    The Brake Booster vacuum reserve must empty out by repeatedly pushing and releasing the Brake Pedal to start replacement. When possible remove the vacuum power brake sensor electrical plug. Meanwhile take apart the vacuum power brake check valve and hose assembly from the Brake Booster opening. Untuck the electrical center and bracket before taking out the master cylinder. Separate Brake Pedal pushrod components by taking out the nut first then the washer before disconnecting it from the Brake Pedal pivot pin. Take out the power brake vacuum booster components including vacuum Brake Booster nuts during replacement while checking the power brake vacuum booster gasket condition to replace it when found damaged. Install the new vacuum booster gasket directly followed by placing the power brake vacuum booster . Fasten the two vacuum Brake Booster nuts and torque them to 17 nm (14 lb ft). Add gm high temperature grease gm p/n 12345996 (Canadian P/N 10953501) to the Brake Pedal pushrod pin before fitting it properly into the pedal pivot pin. Install the Brake Pedal pushrod washer and nut , fasten the nut to 10 nm (89 lb in). Connect the vacuum power Brake Booster check valve and hose assembly back to the Brake Booster location by using alcohol to assist attachment. Put back the master cylinder and the underhood electrical parts and bracket.
    Posted by ChevyPartsGiant Specialist
    Q:
    What should be done after connecting the brake pedal pushrod for the 2010 Chevrolet Cobalt? Posted by Customer
    A:
    Reattach the vacuum power brake booster check valve and hose assembly to the brake booster grommet, using a small amount of denatured alcohol as an assembly aid if necessary, and connect the vacuum power brake vacuum sensor electrical connector if equipped.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Brake Booster
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OEM GM 20852777, Excellent Performance and Perfect Fitment

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